Relay.



No. 859,676. PATENTED JULY 9, 1907.

R. H. MANSON.-

RELAY.

APPLICATION FILED SEPT. 9. 1906.

flwenfor NITED STATES PATENT OFFICE.

RAY H. MANSON, OF ELYRIA, OHIO, ASSIGNO'R TO THE DEAN ELECTRIC COMPANY, OF

ELYYRIA, Ol'llO, A CORPORATION OF OHIO.

RELAY.

No. 859,676. I Specification of Letters Patent. Patented July 9, 1907.

Application filed September 9,1905. Serial No. 277,731.

To all whom it may concern: .1 1n the drawings A is the electro-magnet oi' the relay. 55 Be it known that I, RAY H. MANsoN, a citizenof the wound upon a straight cylindrical core a provided with United States, residing at Elyria, in the county of Loheads E and E. The head 15 is of insulating material 'rain and State of Ohio, have invented certain new and such as indurated fiber, or the like; while the head E is 5 useful Improvements in Relays, of which the following l of brass or similar non-magnetic metal, faced on the inis a specification, reference being had therein to the acside with an insulating disk or supplementary head a". 60 companying drawing. At its rear end the core is reduced, as shown at My invent-ion relates to relays, and has for its object and is threaded to receivea nut a, between which and the improvement of a type of relay largely employed in l the shoulder a is clamped the extension or return bar telephone exchanges. of iron 1). This bar is made in the shape 01' a bell- In such exchanges the relays are ordinarily mounted crank, with its long arm extending the length of the 65 upon racks, and for the sake of convenience they are magnet parallelto the core a, and having its extremities usually secured cnd-on, being arranged in rows and din approximately the same plane as the pole piece protected from dust and accidental injury by means or end of the core a.

individual covers. The frame of each relay is com- The brass head E is punched and formed up with a posed essentially of a core and an extension bar secured circular body, a raised flange or collar e, and two pro- '70 to the core at one end and lying parallel thereto upon jecting cars a. In assembling the relay this head is the outside of the winding, with its free end in the forced on the core with the Collar surrounding the polesame plane as the free end of the core. The armature piece and projecting ovcr slightly beyond the end of for such a relay is commonly made of soft iron in the the same. This is for the purpose of preventing the shape of a bell-crank pivoted upon the end of the re armature from sticking, thus saving the copper or brass 7 turn bar or extension, with one arm extending back rivet usually employed for that purpose. When in poover the same and the other dropping in front of the siti'on the projecting ears e onthe head extend upcore. Thus, when the end near the core is attracted wardly and outwardly, as shown in Figs. 1 andQaud the the other end is raised up, in order to utilize this moextremity d of the bar D is received and held between tion to the best advantage, contact springs are comthem, being thus absolutely guarded against displacemonly mounted at the rear end of the extension bar, merit, even though thenut 0. should become quiteloosu with their free ends extending forward above the horia dovetail, screw, or other fastening holding it down. zontal arm of the armature lever, upon which they rest The springs C, which may be of any required nun.-

00 with interposed insulation so arranged that when the her and arranged in any desired order, are secured b armature is moved the relations of the springs will be screws upon'the rear end of the return bar D. They S5 altered as desired. To secure the relay upon the rack are separated by the usual insulating strips, and are the rear end of the core is commonly threaded or provided at their rear ends with perforations or reduced tapped, and the extension bar carrying the other parts portions for soldered connections. Lying parallelwith is secured thereon by means of a suitable not or nuts' l the return bar D, their forward ends come over the ex- The common fault with such relays as l have just detremity d of the bar, toward which they are given a 9G scribed is their liability to lose the adjustment or their Between them and the bar, however, lies the armature parts by the loosening of the not or screws connecting B, which is mounted in a novel and improved manner. the core and the return bar, a very slight motion of the This armature is shown by itself in Fig. 3. lts general 40 latter at its rear end being multiplied at its forward end shape is that of a bell-crank, with side lugs or ears I)? and drawings, wherein:

so as to prevent an accurate operation oi the armature an opening b its upper arm 5 carries an insulating and springs. This my present invention absolutely stud I), and underlies the springs C when in position. prevents, since it removes the armature pivot entirely The arm b drops down in iront of the pole-piece of the from the return bar, mounting it instead upon the formagnet, and the opening b is for the purpose of receiv- 45 ward head of the spool, which is rigidly fixed upon the ing the insulating stud or post 0 having a shoulder upon core. The same extension pieces or ears on the head which rests the lowermost springs 6-, and a reduced which support the armature serve also to prevent dis-' upper portion 0 upon which rests the uppermost spring placement of the extension bar. only, the intermediate spring 0 playing between the My invention is illustrated in the accompanying other-two, whose positions are thus fixed. To move 1 this intermediate spring it is provided with a stud Figure 1 is a side. view of a relay embodying the l riveted to it and passing down throughaclearance open- 10 5 sam'epFigQZ is a frontendview thereof with the armal ing in the spring a to rest upon the insulating spot or ture removed, and Fig. 3 is a perspective View of the arstud b on the armature. .Thus when the arm b is mature. raised or lowered it raises or lowers the spring c.

The side lugs or cars I) 01' the armature are notched to straddle the ears e of the spool head E, as clearly shown in Fig. l. The importance of this arrangement is apparent when it is considered that thus the armature action is made absolutely certain, since the spool head E is fixed, and even though the nut in of the bar D should become quiteloose at the rear end of the magnet, the dovetail shown in dotted lines in the drawing, or its equivalent would hold down the end of the bar D into the notch between the cars 6 of the head E, thus preventing lateral displacement of either the bar end or the springs.

The relay thus produced is exceedingly efficient in operation and although the armature is not in any wise supported upon the end of the return bar, I find that its magnetic circuit is suiiiciently good to insure quick and strong operation in addition to perfect reliability.

I have illustrated and described my invention thus far without any particular reference to the arrangement ol' the contact springs. It will be observed however that the invention contemplates what I may calla visible contact relay. That is, the contact springs have their free ends extending forward and overlying the upper arm of the armature, so that the latter will not obscure the view of the contact points. I shall claim this in combination with the other features of the invention, but it is'not in itself an essential part of the invention. The form and arrangement of contacts, and the connection between them and the armature, is a matter 01' choice with the manufacturer, and I do not wish to limit myself therein.

Having thus described my invention what I claim and desire to secure by Letters Patentis:

1. The combination with a magnet. of an armature therefor having twp arms extending at an angle to each other. a magnet head having a projecting ear adapted to lit into a notch in said armature and to form a fulcrum therct'or upon which it may rock, one of said arms of the armature serving-as a portion of the magnetic circuit of the magnet. and parts adapted to be operated by said urumture when it is actuated, substantially as described.

:2. The combination with a magnet, and an armature therefor comprising two arms at an angle to each other, a spool head upon said magnet having a projecting edge upon which said armature is fulcrumed intermediate of its ends. one of the arms of said armature extending trans rcrscly oi the magnet and the other longitudinally thereof, said armature serving, when the magnet is energized, to shorten the path for the magnetic lines. and parts adapted to be operated by said armature, substantially as dest 'ibed.

.l. The combination with a magnet having a core and suitable parts afiixed thereto to bring the magnetic poles thcrot' close together. an armature for the magnet having two arms extending at an angle to each other, said armature being supported to rock upon a fulcrum formed integrally on one of the sp0ol-heads of said magnet as one of its arms is attracted by one of said poles, and parts adapted to be actuated by said armature, substantially as described.

i. The combination with a magnet, of an armature therefor having two arms bent at an angle to each other, a spool-head having a projecting edge upon which as a fulcrum said armature is supported intermediate of its ends and may rock. one of said arms being transversely disposed with reference to the magnet, and the other longitudinally disposed and extending alongside the magnet. and switch contacts controlled by dcsci'ibcd.

.1. The combination with a magnet, of an armature thercl'or having two arms extending atnn angle to each other. on spool-head of the magnet having a projecting I edge upon which as a l'ulcrum said arnmlurc is supported I illlt'l'lilctliiili' of its ends and may rock. ouc oi said arms cl i the armature being in position to bc zllil'zlclt'tl by the ma rnot. and switch contacts controlled by the sziid arnuriurc. I substantially as described. \i. The combination with a i1i;1;:net-coil. of a col'c lhcrcl for provided Willi metallic parts i'ormiug uu external mug" i netic circuit normally open at one portion. a bent armature of magnetic material having lwo arms at an angle to each other so supported as to close the normally open portion or car in the external magnetic circuit or shorten its path for the lines of force when llll core is niacnctizcd. one spoolhead of the magnet having a projecting edge upon which the armaturerocks as its l'ulcrum, and :i bunched set of tint superposed contact springs operated by said armature. said set being supported by and secured to d portion of the parts forming the externahmagnetic circuit. substantially as described.

7. The combination with u ningncbeoi]. of a core therefor provided with metallic parts forming an external magnctic circuit normally open at one portion. :1 bcnt arma ture having two arms at an angle to each other and supported upon an integral part of one spool head oi the ufug net as a fulcrum in a manner so that one or said arms will close said normally open portion or gap in the exter- \nal magnetic circuit or shorten the path for the lines of force when the core is magnetized. and a bunched set of ilar superposed contact-springs carried by the framework of the clectromagnct and operated by said other arm, substantially as described.

it in a relay. the combination with a magnet structure. of :in armaturedever having one arm extending across in front oi. one end of the magnet: and adapted to be uttrarted by said magnet and the other arm exteudi-m; rearwardly at the side of said magnet, said armature l'ever being pivoted upon an integral part of one spool head of the magnet, a set of superposed switch springs disposed *longitudinully of said structure and having their free contactcarrying ends extending to near the forward end thereof and outside of said rearwardly-extending arm, whereby the movement of said armature shall operate said springs without obstructing a full view of the contacts from directly in front of the magnet structure. substantially as described.

S). In a relay. the combination with a magnet structure, of an armature-lever consisting of two arms at an angle to each other, one arm extending across in front oi the magnet and adapted to be attracted thereby and the other extending: rearwardly :it the side of said magnet, said armature lever being pivoted upon an integral pact of one spool-head oi the magnet adjacent its angle, :1 set of switch springs disposed longitudinally of said structure and havingrlielr free contact carrying ends adjacent the fOl'Vzlld end thereot and outside of said rearwardly extending: arm of said armature lever whereby the contacts carried by said springs are exposed to view from the forward end of said structure, and means engaging the springs at a point behind the contacts for operating said extending arm of the armature springs by said rearwardly lever. substantially as described.

10. The combination with a magnet structure, oi an armature lever therefor consisting, of two parts at :in angle to each other and pivoted on a projecting edge of the spool-hend at the forward end of said structure, one part of said armature extending across in front of the magnet and adapted to be attracted thereby, while the other arm extends rearwardly at the side of said magnet, a set of switch springs disposed longitudinally of said structure and at the same side of the structure as said latter part of the armature, said set consisting of a plurality of superposed springs, the free ends of said springs being: raised above the plane of armature. and a member carried by said latter part of the armature engaging a spring of said set at a point to the rear 01 the contacts of the spring to operate the same when the magnet is energized. substantially as described.

11. In a relay, the combination with a magnet structure, of an nrmature-lever consisting, of two arm 1' an angle to each other, one arm extending across in Loni of the magnet and adapted to be attracted thereby and the said renrwardly extending part of the other extending rearwnrdly at the side of said magnet, said armature lever being mounted to rock upon a projecting edge of one spool head of said magnet, 11 set of switch springs disposed longitudinally of, said structure and having their free ends adjacent the forward end thereof and outside of said retirwardly-extending arm of said armature lever whereby the contacts carried by said springs are exposed to view from the forward endof said structure, and means engaging the springs hack of the contacts thereof for operating said springs by said rearwardly-en tending arm of the armature lever, substantially as described. y 1

12. The combination with a magnet structure, of an ar mature lever therefor consisting of two parts at an angle to each other and adapted to rock upon a projecting edge of one spool head of said magnet, one part of said armature extending across in iront'of themagnet and adapted to be attracted thereby, while the other arm extends rcurwardly at'the side of said magnet, a set of switch springs disposed longitudinally of said structure and at the same side of the structure as said latter part of the armature, said set consisting of a plurality of superposed springs, the free ends of said springs being raised above the plane of said rcarwardly-extending port of the armature, and a member carried by said latter part of the armature engaging an intermediate spring of said set back of the contacts to operate the same when the magnet is energized, sub stantially as described.

iii. in a relay, the combination with a magnet structure, of an armature lever having one arm extending across in i'ront of one end of the magnet of said structure composed of a core and and adapted to he arm extending rearwardly nt the side oi? said structure, said armature lever being iivoted on an integral part of one spool head of the magnet, a set of superposed switch springs disposed longitudinally of said structure and having their free contact carrying ends extending to near the forward end thereof and outside of said rearwardly extending arm, and means for operating said springs by the movement of said armature and at the same time leaving all the contacts of said springs exposed to view from directly in front of the magnet structure, said means engaging the springs at a point hack of the contacts, substantially as described.

l i. in a relay, the combination of a magnetic frame :1 return bar parallel thereto, with having extensions receiving the end of the bar between them, with a set of contact springs mounted 'upon said bar and having their free ends ex tending near the end thereof. and a bell-erank armature having notched side ears straddling" the end of the bar and resting on the extensions of the spool-head, one arm of the hell crank extending in front of the end of the core, and the other beneath the Contact springs with means to engage and actuate the same, substantially as described.

In testimony whereof I :iflix my signature in presence of two witnesses.

a spool-head on the core RAY I-I. MANSON.

Witnesses ARTHUR B. KRATZ, ABEL .l. Iionnu'rs.

attracted by said magnet and the other 

